Self-focused electron beams produced by pyroelectric crystals on heating or cooling in dilute gases
Self-focused electron beams produced by pyroelectric crystals on heating or cooling in dilute gases
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DOI：
10.1063/1.1418458
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发表时间：
2001-11-12
影响因子：
4
通讯作者：
Shafroth, SM
中科院分区：
文献类型：
--
作者：
Brownridge, JD;Shafroth, SM
自聚焦、空间稳定的电子束是由柱状热释电晶体(如LiNbO_3)在稀气中冷却时产生的，前提是从+z基座加热。观察到了高达170keV的束流能量。直径4 mm×10 mm的晶体加热到160℃，产生焦距为22 mm、光斑尺寸为1 mm的空间稳定光束。在这里，我们提供了这些电子束存在的照片和电子证据。(C)2001年美国物理研究所。
Self-focusing, spatially stable, electron beams are produced by cylindrical pyroelectric crystals such as LiNbO3 in dilute gases on cooling provided that heating is done from the +z base. Beam energies up to 170 keV have been observed. A 4 mm diameter x 10 mm crystal heated to 160 degreesC gives rise to spatially stable beams with a focal length of 22 mm and a 1 mm spot size. Here we present photographic as well as electronic proof of the existence of these electron beams. (C) 2001 American Institute of Physics.